ShiftCal® vs Flexi Calendar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ShiftCal®
This app helps emergency service personnel manage complex 24-hour shift schedules. It supports multiple platoons and allows for easy customization of various shift patterns, including Kelly days and RDOs. Users can create and switch between different schedules for personal or professional use.
- Platoon-based 24-hour shift scheduling
- Customizable for 2-6 platoons
- Supports .ini shift schedule files
- Create and switch multiple schedules
- Display Kelly days, RDOs, debit days
- Paste from clipboard for quick schedule creation
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ShiftCal® is a platoon-based calendar for emergency service personnel working 24-hour shifts. It is easily customized for any regular schedule of two to six platoons and uses the same shift schedule (.ini) files as the desktop version. Create multiple shift schedules and switch between them at will - keep track of schedules for family members or neighboring agencies. Display Kelly days, RDO's, or debit days in an alternate color. Quickly create new shift schedules using the "Paste from Clipboard" option - see the "Help" tab. ShiftCal is not an appointment calendar - you already have an excellent one on your device. ShiftCal is a registered trademark.
Flexi Calendar
Manage complex and rotating work schedules with ease. This app is designed for individuals with non-traditional weekly routines, allowing for custom schedule creation and sharing. Sync with your device's calendar and find common availability with friends.
- Customizable rotating schedules
- Support for non-traditional workweeks
- Schedule comparison with friends
- Export to Apple Calendar
- Find mutual availability
- Ideal for shift workers
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Your schedule doesn’t fit a standard week. Flexi turns rotating shifts into a clear, color-coded calendar and helps people you know find time together. SEE EVERY SHIFT • Build repeating work patterns, rotas, and schedule presets • Scan upcoming days at a glance • Track hours and spot trends PLAN TOGETHER • Compare group availability without sharing your entire calendar • Create group events with locations, notes, RSVP deadlines, and Going/Maybe/Can’t Go responses • Keep the next group event visible in the conversation MESSAGE PRIVATELY • Start direct chats or named group chats • Use moderators, permissions, nicknames, blocking, and reporting • New messages and event details use end-to-end encryption on supported Flexi versions STAY IN SYNC • Add selected events to Apple Calendar • Import or export the calendars you choose • Get optional reminders and notifications Contacts and calendar access are optional and requested only when you use features that need them. Account deletion is available in Settings.
Screenshots
Verdict
The clearest difference is price: Flexi Calendar at Free against ShiftCal®'s $1.99. Flexi Calendar also leads on rating (5.0 vs 1.0) and update cadence (daily vs every 4 months). ShiftCal®'s advantage is iOS requirement (11.0 vs 16.4). On ratings volume, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Flexi Calendar is free to download; ShiftCal® costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Flexi Calendar holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 5 respectively.
ShiftCal® ships an update every 4 months, Flexi Calendar daily. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.
| Parameter | ShiftCal® | Flexi Calendar |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 1.0 (2 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 | 5 — better |
| Update frequency | Every 4 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 20 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Wesley Erickson | Richard Lavey |
Customer experience
ShiftCal®
Flexi Calendar
In-app purchases
ShiftCal®
No in-app purchases
Flexi Calendar
No in-app purchases









